//用来完成不同数据的改变
const mutations ={
    changeTitle(state,title){
        return{
            title
        }
    },
    changeBack(state,back){
        return{
            back
        }
    },
    changeBarIndex(state,index){
        return{
            selectBarIndex:index
        }
    },
    changetabBarShow(state,show){
        return{
            isTabBarShow:show
        } 
    }


}
export default mutations;